New route to improve the fracture toughness and flexural strength of Si3N4ceramics by adding FeSi2

doi:10.1016/j.scriptamat.2016.08.012

SIC OpenIR

	New route to improve the fracture toughness and flexural strength of Si3N4ceramics by adding FeSi2
	Wang, Lujie 1,2; Qi, Qian 1; Cai, Ping 1; Zhang, Hui 1; Yang, Xiao 1; Liu, Xuejian 1; Jiao, Zheng 2; Huang, Zhengren 1
	2017
Source Publication	Scripta Materialia
ISSN	13596462
Volume	126 Pages:11-14
Abstract	Silicon nitride (Si3N4) ceramics were pressureless sintered with 0.2 wt% FeSi2at 1780 °C for 2 h in nitrogen with Al2O3and Y2O3as sintering aids and found to have high toughness and strength. During the sintering process, β-Si3N4crystal seeds and Fe5Si3reinforcing particles were in situ generated by FeSi2. Abnormal growth of Si3N4grains was promoted by β-Si3N4crystal seeds. High thermal expansion coefficient of Fe5Si3particles induced residual stresses in the ceramics matrix, which deflected the crack. Ultimately, the fracture toughness and flexural strength of Si3N4ceramics reached 9.8 ± 0.5 MPa·m1/2and 1086 ± 48 MPa respectively. © 2016 Acta Materialia Inc.
DOI	10.1016/j.scriptamat.2016.08.012
EI Accession Number	20163402730313
EI Keywords	Fracture toughness
EI Classification Number	804 Chemical Products Generally - 804.2 Inorganic Compounds - 812.1 Ceramics - 951 Materials Science
Citation statistics	Cited Times:7[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/25927
Collection	中国科学院上海硅酸盐研究所
Affiliation	1.State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai; 200050, China; 2.College of Environmental and Chemical Engineering, Shanghai University, Shanghai; 200444, China
Recommended Citation GB/T 7714	Wang, Lujie,Qi, Qian,Cai, Ping,et al. New route to improve the fracture toughness and flexural strength of Si3N4ceramics by adding FeSi2[J]. Scripta Materialia,2017,126:11-14.
APA	Wang, Lujie.,Qi, Qian.,Cai, Ping.,Zhang, Hui.,Yang, Xiao.,...&Huang, Zhengren.(2017).New route to improve the fracture toughness and flexural strength of Si3N4ceramics by adding FeSi2.Scripta Materialia,126,11-14.
MLA	Wang, Lujie,et al."New route to improve the fracture toughness and flexural strength of Si3N4ceramics by adding FeSi2".Scripta Materialia 126(2017):11-14.

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库